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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
2005 Volume 68 Issue Suppliment2 Pages
1-2
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
JOURNAL
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DiMAGE X1 was developed with a camera-shake compensation system for thin, compact digital camera bodies. The new camera-shake compensation system works by moving the both the lens and CCD together to compensate for camera motion and is compact enough to be incorporated into the folded optical design of the non-protruding lens in the Konica Minolta DiMAGE X series cameras. The lens/CCD unit is moved with stepping motors and a photo-interrupter monitors the camera motion, making it a relatively cost-effective design compared to CCD-shift systems.
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Yuta Miyagawa, Noriaki Matsubara, Manabu Nakahanada
2005 Volume 68 Issue Suppliment2 Pages
3-4
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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We have been developed digital minilabs since we released QD21 first in 1997. Especially when we released R series with exposure engine featuring PLZT devices, we have been sought high image quality. To reach its goal, we had to realize high levels of image uniformity. Nonlinear characteristics of PLZT and load characteristics of solid state shutter Array got in the way of the goal. In this report, I introduce how we developed uniformity technology and succeed to get top quality in print image.
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1. Confirmation of Flatbed Type Image Scanners for Consumer Use
Michiko Nakatsuchi, Fumihiro Araki, Hiroshi Saijo
2005 Volume 68 Issue Suppliment2 Pages
5-6
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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Historic large-format glass plates that record early railways in Japan have been digitized for image archive using flatbed type scanners for consumer use. Digitizing the images of the film 6×9 or smaller format has been made using film scanners. However, 4×5 or larger format images are hardly digitized without expensive image scanners for printing or survey use. Recent flatbed type scanners for consumer use claim their potential to scan large-format images at a moderate cost. We examined the image quality of four scanners using a test-chart, Transmission Sinusoidal Arrays M-7 of SINE Patterns LLC, and found Seiko-Epson model ES-10000G is sole and most appropriate if it is tuned with the chart.
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Sachiko Abe, Takahiro Takiguchi, Norimichi Tsumura, Toshiya Nakaguchi, ...
2005 Volume 68 Issue Suppliment2 Pages
7-8
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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In this research, we propose the flat-bed scanner system to record the spectral and glossiness recording for various sheets like objects. In the proposed system, five filters are used to acquire the multiband images of the sheet like object. The spectral reflectance image can be estimated and be recorded from the multiband images. The glossiness of the object is recorded as the two images taken by the difference geometries for illuminant which from 45 degrees angle, and from 0+a degrees angle. We performed a computer simulation to evaluate the acquisition geometry for the two images and reproduction of recording images. The various appearances are reproduced through a weighted linear combination of the two images.
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Nobuyuki NAKAMORI
2005 Volume 68 Issue Suppliment2 Pages
11-12
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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3D images, such as CT, MRI and PET, are used in the medicine, and greatly contribute to improvement in medical diagnosis. On the other hand, since a 3D image has larger amount of data than that of a 2D image, it is also a fact that a radiologist's load is increasing. To decrease the radiologist's load, development of the effective technology to visualize a 3D image and to assist the detection of disease is required. Here, the recent topics of the reconstruction, visualization, and computer-aided diagnosis for 3D medical image are reviewed.
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Mizuki KATAGIRI, Takahito URANO, Yoshikazu TAI, Hideaki KUBOTA
2005 Volume 68 Issue Suppliment2 Pages
13-14
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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For image denoising by wavelet transforms, it is very important how we decide the threshold. The “universal threshold” proposed by Donoho gives the optimal threshold theoretically, but the information of noise power on the image is needed. In this research, discriminant analysis, which is used for image binarization conventionally, is applied to determine optimal thresholds in wavelet domain. We selected a medical chest x-ray image of various signal-to-noise ratios for wavelet denoising. We found that our method was effective when there were many noises on the image.
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Haruki Kamiyama
2005 Volume 68 Issue Suppliment2 Pages
15-16
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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For astro-photographs, in which faint lights are taken with long exposures, appropriate image processings are required to represent the objects. Stellalmage (R), specially developed for astro-photographs, allocates 96-bits for each color pixel so that we can process all kinds of image processings with keeping the original S/N ratios. Here, we introduce some techniques which can be applied to other fields of image processings; e.g., the ‘Digital Development Processing’ method which compresses tones of the highlight ends of an image hyperbolically in order to emphasize the shadow parts of the image.
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Examination of Enhancement Mechanism with Au-Overcoated Nanoislands
Shuki Mine, Mitsuo Kawasaki, Masahiro Kawasaki
2005 Volume 68 Issue Suppliment2 Pages
17-18
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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The mechanism of highly enhanced short-ranged molecular fluorescence of dyes on thick tabular Ag island films (TAIF) was examined further by studying how the overcoating of a very thin Au film on the Ag nanoislands affect the fluorescence quantum yield. The Au-overcoating drastically reduced the fluorescence quantum yield, but did not seriously change the dye-to-mental distance dependence of the quantum yield. We also found that the fluorescence quantum yield had a good linear relationship with the scattering efficiency of the island film with or without the Au-overcoating. These results confirm that the enhanced fluorescence stems from the rapid dye-to-metal energy transfer followed by the emission from the resultant local plasmon-like oscillation of free electrons.
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Eiji Kozawa, Mitsuo Kawasaki, Masahiro Kawasaki
2005 Volume 68 Issue Suppliment2 Pages
19-20
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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We observed a highly enhanced photoelectric conversion with a microscopically roughened Au electrode modified by Jand/or H-aggregate of cyanine dyes with an intermediate molecular spacer (a self-assembled monolayer of aminoalkanethiol) in between. In addition to the increased light absorption, as attributed to the increase in the amount of adsorbed dyes (specific surface area effect) and to a light scattering effect, the excitation of the surface plasmon plays an important role in causing further enhancement in the effective light absorption by the coupling between the surface plasmon and the dye transition dipoles.
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Kenjiro Teshima, Takuro Murakami, Tsutomu Miyasaka
2005 Volume 68 Issue Suppliment2 Pages
21-22
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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Energy output by the solar-electric energy conversion which achieved by the dye sensitized solar cells (DSC) is greatly influenced by luminance depending on weather, time, and so on. Photocapacitor which combined DSC and electric double layer capacitor (EDLC) is the novel device having photoelectric generation and electric charge-discharge abilities, and it expected to improve the problems about steady electric power supplements by the solar energy conversion. We have first construct a high-voltage photocapacitor of three-electrode configuration, comprising a dye-sensitized mesoporous TiO
2 electrode, two carbon-coated electrodes, and two liquid electrolytes. The three-electrode system attained a charge-state voltage of 0.8V and drastically high energy density compared with the previous two-electrode photocapacitor.
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S. Miura, M. Nishimura, N. Kobayashi
2005 Volume 68 Issue Suppliment2 Pages
23-24
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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We studied electrochemical properties of electrochromic materials, which showed reversible color change by electronic stimuli, from a view point of paper-like electronic imaging device. Electrochemical materials showing color changes from clear to the three primary colors such as RGB or CMY should be required to realize full color paper-like electronic imaging decvice. In this paper, we studied electrochromic characteristics of viologen and phthalate derivatives from the view point of its color and the electrochromic mechanism for paper-like display.
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Fumiyuki SHIBA, Masakazu YOKOYAMA, Yusuke OKAWA
2005 Volume 68 Issue Suppliment2 Pages
25-26
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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Preparation condition of monodisperse tungsten oxide particles was reconsidered to improve the formation efficiency of precipitate. In this study, the concentration of tungstate salt was set to 5-fold higher than the previous study. Three kinds of tungstates, Li
2WO
4, Na
2WO
4, and K
2WO
4, were examined to evaluate the influence of cation. Compared to Na
2WO
4, employed in the previous study, Li
2WO
4 produced smaller WO
3·H
2O particles and promoted conversion to the particle from gel-like precursors. On the contrary, WO
3·H
2O particles did not generated from K
2WO
4. Thus the lithium salt was suggested to be preferred in the preparation system.
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H. Uenishi, M. Iwasaki
2005 Volume 68 Issue Suppliment2 Pages
27-28
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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Industrial synthesizing process of titanium oxide uses harmful substance such as chlorine, or sulfuric acid. In our laboratory, a safer and completely different synthesizing technique is developed, and the precusor aqueous solution was synthesizedby direct chemical-oxidation of titanium. As a result, very fine particles of titanium oxide with visible light response were synthesized by hydrothermal processing of the precusor aqueous solution with tungsten or dye.
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N. Uemura, M. Iwasaki
2005 Volume 68 Issue Suppliment2 Pages
29-30
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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Quinacridon pigments show very high stability against light and heat, but the color brightness of pigments is relatively low. It is supposed that low brightness is due to its particle size of not enough small. For fabrication of very fine quinacridon particles, we propose the rapid solution mixing method. By mixing of Quinacridon DMSO solution with water, ultra fine particles with the diameter of less than 200 nm were acquired.
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Yoshiro Yonezawa, Atsushi Yamaguchi, Akihito Yoshida, Noritsugu Kometa ...
2005 Volume 68 Issue Suppliment2 Pages
31-32
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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Langmuir-Blodgett (LB) films incorporating two kinds of unsymmetrical merocyanine dyes (MC (X)/MC (Y) X, Y=O, S, Se) have been fabricated by using octadecane (OD) and arachidic methyl ester (AME) as the matrix molecules; MC (X);MC (Y): 0D;AME = (1-
x);
x: 1: 1. Absorption spectra of the MC (X) assembies and the mixed assemblies (MC (X)/MC (Y)) have been measured in wide temperature range
T=6.0-293 K. The relationship between the absorption coefficient of the low-energy tail of the aggregate band and incident photon energy has been analyzed in the framework of the Urbach-Martienssen (UM) rule. It has been found that the steepness parameter a versus
T plot for each x is useful for the classification of the types of the mixed aggregate.
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Masao Matsumoto, Momoko Watanabe, Chiyuki Kohama, Tadamitsu Ideguchi, ...
2005 Volume 68 Issue Suppliment2 Pages
33-34
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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To optimize the target/filter combinations and tube voltages for the detection of low-contrast objects using full-field digital mammography system (FFDMS) Senographe DS (GE) under the conditions of a matched average glandular dose (AGD). Optimization of technical factors was carried out for acrylic breast thickness from 1.7, 3.7 and 5.7 cm, respectively. On each thickness of the phantom, exposure parameters (anode, filter, entrance exposure) recommended by Senographe DS were used as a standard radiation exposure for FFDMS. The AGD for standard radiation exposure in each breast thickness was calculated based on half-value layer and entrance exposure measurements. Beam current that matched AGD at each phantom thickness, while varying target/filter combinations and tube voltages across the full range available for FFDMS, was calculated. Contrast-detail (C-D) images were acquired under the constraint of matching the AGD for each breast thickness. C-D images were scored by observers. In general, there were no significant differences between C-D scores and technical factors (target/filter combinations, tube voltages) for FFDMS under matched AGD. However, our results indicated that the Mo/Mo anode-filter combination and low tube voltage were preferable for a thin breast, and Rh/Rh and higher kV preferable for a thicker breast. Our observer performance results indicate that the detection of low-contrast objects is optimized for FFDMS under constraint of matched AGD.
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Chika Honda, Hiromu Ohara, Akira Ishisaka, Fumio Shimada
2005 Volume 68 Issue Suppliment2 Pages
35-36
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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We have developed a digital phase contrast mammography system in which an acquired image magnified by 1.75 times is printed on a hard copy in a size de-magnified by a ratio of 1.75 in order to obtain an original size image. In this system, spot compression is conducted with 2.65x magnification in acquisition, and then the acquired image is reduced in size by 1.75 times so as to print a 1.5x spot magnified image (2.65÷1.75=1.50). We would like to discuss the image quality of the spot magnification using phase contrast technique.
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Yasuko Kano, [in Japanese], [in Japanese], [in Japanese]
2005 Volume 68 Issue Suppliment2 Pages
37-38
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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When we stare at works of art, such as a hanging scroll, we may be fascinated by their beautifully harmonious shape rather than the meaning of letters drawn there. Everyday, we see many letters and have different impression by the difference in the kind of letters or fonts. There are various words to express our impression, e.g., grace, hardness, and graveness. We are taking interest in what of a letter these impressions originate. We have taken notice of the relation between the impressions of Hiragana letters and the characteristics of Fourier transforms of them. This paper describes the fact that we have found in this relation.
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S Gershoni, H Kobayashi
2005 Volume 68 Issue Suppliment2 Pages
39-40
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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We applied imaging methods to examine visual perception theories with photography, through investigation of the relationship between the aesthetic experience of looking at photographs and the ability to actually discriminate the photographic language building blocks- luminance contrast and spatial configuration, at different regions of the characteristic curve. After examining the relationship between contrast discrimination performance and preference of contrast in photographs we used eye-movement tracking measurements to study the effect of contrast over fixation drift and its relation to an aesthetic experience.
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Jie Bai, Toshiya Nakaguchi, Norimichi Tsumura, Yoichi Miyake
2005 Volume 68 Issue Suppliment2 Pages
41-42
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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We have proposed a metric by using the gazing information obtained from the measurement of eye movement of the observers as a weight to the gazing area. However, observers do not always concentrate their attention on one place in the subjective evaluation experiment of the static image. Therefore, it is necessary to consider the change of the concentration with time. In this paper, we survey the change of the concentration of the observers when they evaluate the image quality by analyzing the change of their gazing area. The results show that the gazing area expands with time firstly, and it will converge at the final.
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Kumiko Ueda, Shouji Yamamoto, Norimichi Tsumura, Toshiya Nakaguchi, Yo ...
2005 Volume 68 Issue Suppliment2 Pages
43-44
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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In this paper, we propose a projection display system based on the spectral color reproduction. It can change a printed color by synthesizing a projection image onto the print accurately. The projection image is determined from the subtraction of the reflected radiance between the actual print and target print. Using spectral information of image projector and printed color, we can estimate the projection image and match the color between the actual print and the target print accurately. We demonstrate the simulation and experiments to evaluate the effectiveness of the proposed system.
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Toru KANEKO, Daichi MIYAKE, Takao ARAI, Yukio TOKUNAGA
2005 Volume 68 Issue Suppliment2 Pages
45-46
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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Photo ink-jet paper has a micro porous ink absorptive layer which contains inorganic finegrained pigments. This layer affects to paper gloss, ink absorptivity and optical density of p rinted image. Therefore, micro porous layer is important in photo ink-jet papers. In this study, we evaluated several micro porous layers containing different kinds of pigments, and tried to find the optimum conditions of pigment for micro porous layer.
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Molecular weight distribution and separation of beta chain
Sadako Tani, Takehiro Tani
2005 Volume 68 Issue Suppliment2 Pages
47-48
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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Fish gelatin had few amount of high molecular weight fractions, and there were many parts of alpha and beta chain. For a fish gelatin with comparatively high melting point, though melting point was lower than that of bovine bone gelatin, it showed the comparable degree of viscosity, and jelly strength. Concentration dependability of its viscosity was larger than bovine bone gelatins. Beta chain gelatin, which separated from fish gelatin, had the high viscosity, and its jelly strength was low compared with original gelatin.
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M. MIMASU, K. SUZUKI
2005 Volume 68 Issue Suppliment2 Pages
49-50
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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Aldehyde contents by MBTH method in gelatin have variation gelatin by gelatin. It has negative effect on photographic specificity, solubility in pharmaceutical capsule and browning by Maillard reaction in food.
It was found that, aldehyde contents were changed by oxidation of gelatin in previous report. In case of strong oxidation, we find partially increased aldehyde as reducing sugars.
Fatty acids were changed to aldehyde by oxidation, heat and light sources as well known in food science. Gelatin also contain many kind of fatty acid. We investigate morphological change of fatty acid to aldehyde by addition of fatty acid with oxidation.
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M. Iwasaki, T. Kubota, M. Watanabe, T. Yamauchi, T. Kumasawa, K. Ueda
2005 Volume 68 Issue Suppliment2 Pages
51-52
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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A new holographic material, KONIKA MINOLTA OPTO P7000, was examined. The commercially available material, KONIKA P5600, is blue-green sensitive and new P7000 shows enough sensitivity for red. The holograms were recorded with He-Ne laser light on P7000 plates and evaluated their holographic characteristics, such as diffraction efficiency and reconstructed wavelength. The results are discussed comparing with those of former Agfa products.
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Takahito HARADA, Kenichi KUGE, Tomoko SAKAI, Akira HASEGAWA
2005 Volume 68 Issue Suppliment2 Pages
53-54
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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We have been improving upon the method of preparing gold particles in gelatin layer using photographic materials. Then after baking the gold particle layer we obtained the image made of gold layer on the glass plate. Two processes proceed on the baking, one is burning out of gelatine and the other is melting of the gold particle. We analyze the change of gelatine and gold particle on the baking process with AFM and reflection spectra. It got that gold particle layer melted atupper than 500°C, and flat gold layer formed at raising temperature rate of lower than 25°C/h.
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Xiang Chen, Kenichi Kuge, Tomoko Sakai, Akira Hasegawa
2005 Volume 68 Issue Suppliment2 Pages
55-56
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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We have proposed the new method to prepare a photographic image with gold particles dispersed in a gelatin layer using photographic materials. When the exposed photographic film is immersed in the gold thiocyanate complex solution consisted of gold (I) thiocyanate complex, gold atoms are deposited on silver halide grains in the exposed area. One disadvantage of this process is a long immersion period, which is for several hours to several ten days. We found that the ratio of Au to KSCN in the deposition solution affected the deposition rate and the deposition rate would be increased in decreasing the KSCN. Furthermore, there is a possibility that this kind of method may uniform the sizes of the gold particles. This factor is of great important for making smooth gold layer after baking.
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Yusuke ENDO, Kenichi KUGE, Nakahiro YASUDA, Hiroshi KUMAGAI, Hiroshi S ...
2005 Volume 68 Issue Suppliment2 Pages
57-58
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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We have proposed the method of detecting nuclear tracks recorded in the photographic emulsion using the gold deposition development. The method has a lot of advantages to figure nuclear tracks compared with the normal development. We compared with the tracks formed by this method and by the normal development quantitatively by grain density and volume of nuclear tracks. And we examined whether this method was appropriate to the track detection and distinction of the charged particles.
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Kentaro HAYASHI, Kenichi KUGE, Akira HASEGAWA, Nakahiro YASUDA, Chika ...
2005 Volume 68 Issue Suppliment2 Pages
59-60
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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High energy heavy ions used for cancer medical treatment etc. cause nuclear crush reactions once in a while. It is necessary to detect what and how many reactions take place in order to estimate the dose in the treatment accurately. Although CR-39, which is a plastic track detector, is used to detect heavy ions with high energy, it cannot detect ions lighter than Be. On the other hand, a silver halide photograph emulsion plate can record all charged particles, but can't identify large heavy ions. Now it was tried to develop a hybrid device with CR-39 andthe photograph emulsion plate. It was possible to match each track. This suggested the possibility to detect the light ions individually.
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Hiroyuki Mifune, Tadaaki Tani, Seiji Yamashita, Satoshi Aiba, Tomoyuki ...
2005 Volume 68 Issue Suppliment2 Pages
61-62
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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We studied ionic and electronic properties of silver iodide grains to characterize the latent image formation on the grains in photothermographic materials.
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Katutoshi Yamane, Tomoyuki Ohzeki, Fumito Nariyuki, Katsuyuki Watanabe ...
2005 Volume 68 Issue Suppliment2 Pages
63-64
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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It has been found that nano-particles of silver iodide have high blue sensitivity in photothermographic materials, and can be fixed in the stage of development.
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Tomoyuki Ohzeki, Takeshi Funakubo, Hiroyuki Mifune, Katsuhisa Ohzeki, ...
2005 Volume 68 Issue Suppliment2 Pages
65-66
Published: December 01, 2005
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An epitaxial grain composed of silver iodide tabular grain as a host and silver bromide grains as guests in photothermographic material has high blue sensitivity. Blue regular direct X-ray dry film-screen system can be realized with the silver iodide tabular grains and BaFBr: Eu fluorescence radiographic intensifying screen.
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T. Tasaka, H. Mifune, T. Tani
2005 Volume 68 Issue Suppliment2 Pages
67-68
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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We developed measurement method of dose of silver clusters on silver halide grains by utilizing reaction, benzenethiosulphonate converts small silver clusters to silver sulfides. We replace sulfur atom of benzenethiosulphonate to radioisotope
35S and measure dose of Ag
235S converted from small silver clusters. By using this method, we demonstrated on reduction sensitization, photographic sensitivities correspond to dose of silver clusters. We modified this method for high sensitivity measurement by stopping reaction intermediately and data-fitting to formula derived from chemical kinetics.
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Koji Kawato, Kyohei Ogawa, Tadanobu Sato, Tadashi Inaba, Naoto Ohshima ...
2005 Volume 68 Issue Suppliment2 Pages
69-70
Published: December 01, 2005
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Kinetics of electron-detrapping process of Ir dopants in AgCl emulsion grains was studied by photo-induced ESR measurement. We made the kinetic model to analyze the lifetime of electrons trapped by Ir dopants quantitatively. The ESR signal was attenuated in a double-exponential way. The fast decay indicated the electron-detrapping process of Ir dopants, and the slow decay corresponded to the “desensitizaton” in photographic process.
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Soc Man Ho Kimura, Tetsuya Suzuki, Tsuyoshi Mitsuhashi, Kenichi Kuge, ...
2005 Volume 68 Issue Suppliment2 Pages
71-72
Published: December 01, 2005
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The relationships between microwave photoconductivity, photographic sensitivity, and silver halide crystal size in nanometer-size silver halide ultrafine crystals employed in photothermographic dry imaging materials were examined. The behavior of photoelectrons produced by the light irradiation of nanometer-size silver halide crystals indicated that photoconductivity depends on crystal size and, further, that this dependency differs from that found in the micron-size silver halide crystals used in conventional photographic materials. Furthermore, while photographic sensitivity depends on the particle size of silver halide crystals in both photothermographic dry imaging materials and in conventional photographic materials, that dependency was found to be lesser in photothermographic dry imaging materials.
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Tadaaki Tani
2005 Volume 68 Issue Suppliment2 Pages
73-74
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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Sensitization of an AgC1 emulsion by a small amount of iodide ions was studied on the basis of the physical properties of emulsion grains, as measured by a dielectric loss method, microwave and radio wave photoconductivity methods. Iodide ions repel many electron-trapping silver ions at kink sites on the surface into interstitial positions to increase the ionic conductivity of the grains, decreasing the concentration of intrinsic electron traps on the surface and enhancing the trapping of photoelectrons by sensitizing centers.
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[in Japanese], [in Japanese], [in Japanese]
2005 Volume 68 Issue Suppliment2 Pages
75-76
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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It is pointed out by various researches that the media environment has a great influence on human recognition activity. In this research, the impressions of the images with different visual media were evaluated by semantic differential method (Osgood et al., 1957)., to examine the influence of media environment on image recognition. From this experiment, we extracted three factors, which influence on the impression of the images, and considered the relationship between these factors and measured image quality.
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T. Manabe, N. Aoki, H. Koabayashi
2005 Volume 68 Issue Suppliment2 Pages
77-78
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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Professional photographer Kunitoshi Yabe shows possibility to improve pictures in texture and tone by adding noise. In the present paper his technique was analyzed, its physical meanings were discussed, and the automatic application of the technique to digital images was realized.
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T. Ogihawa, N. Aoki, H. Koabayashi
2005 Volume 68 Issue Suppliment2 Pages
79-80
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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In the preceding paper, we showed that adding white and 1/f noise to some type of picture like wood, cloud, etc. results in improvement of impression of space and texture. This is because we have seen pictures with graininess composed of silver particles or dye clouds. In the present paper the image structures of silver image of black and white films and dye image of color films were observed by a microscope, and their type of noise was analyzed. Silver image was close to white noise, while dye image to 1/f noise.
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Halvor Bjørngård, Hiroyuki Kobayashi
2005 Volume 68 Issue Suppliment2 Pages
81-82
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
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This study is on using a non-toxic replacement sensitizer for Carbon printing. Focusing on simplicity, cheapness and easy available materials. The traditional sensitizer is dichromate, which is highly toxic. We are here using iron based, red-ox induced, free radical polymerisation. The problem in these systems is oxygen inhibition; we have here solved this by using an upper emulsion layer of agar agar.
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Norimichi SHIRAI, Akira HASEGAWA, Kenichi KUGE
2005 Volume 68 Issue Suppliment2 Pages
83-84
Published: December 01, 2005
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The decay of photoconductivity in AgBr emulsion grains is investigated by means of 9GHz microwave photoconductivity technique. The AgBr microcrystals that added the hole-injection dye was measured by the wavelength of 355nm and 620nm. The decay component with a decay time of 20μ sec in AgBr grains is ascribed to positive holes. As a result, the measuring both the electron and the hole by the microwave photoconductivity technique became possible.
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Masahiko Saikawa
2005 Volume 68 Issue Suppliment2 Pages
85-86
Published: December 01, 2005
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The LPD method is one of wet process for the formation of metal oxides from metal fluoride solution. By using this method TiO
2 nano particles could be prepared on grained and anodized Al plate. Silver ions were photoreduced on Al plate in AgNO
3 solution self-catalytically and plasmon absorption of Ag nano cluster was observed at 520 nm after visible light irradiation. Using kinetic treatment, it was suggested that the plasmon absorption is due to TiO
2-Ag core/shell particle and the reaction rate of Ag cluster formation is amplified by increasing plasmon absorption.
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H. Asada, M. Iwasaki
2005 Volume 68 Issue Suppliment2 Pages
87-88
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
JOURNAL
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Titanium dioxide (titania) is widely known to be a highly efficient photocatalytic environmental purification material. The titania films made by usual dipping process, however, are very thin and peel off easily from the substrate. We have developed the direct chemical-oxidation process to prepare TiO
2, which is an easier and safer process than any conventional method. Then, the strong and transparent titania film with enough film thickness was prepared by the original method with use of gelatin. In addition, the prepared titania film showed the high photocatalytic activity.
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Sharon Gershoni, Hiroyuki Kobayashi
2005 Volume 68 Issue Suppliment2 Pages
89-90
Published: December 01, 2005
Released on J-STAGE: August 11, 2011
JOURNAL
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